Sound amplifying device

Abstract

The utility model discloses a sound amplifying device which comprises a sound box, the bottom of the sound box is fixedly connected with a sound box support, and one side of the sound box and one side of the sound box support are provided with a connecting outer frame.The sound amplifying device has the advantages that through the arrangement of a bevel edge clamping block and a limiting clamping groove, limiting and fixing between the bevel edge clamping block at the bottom of a connecting plate and the limiting clamping groove are achieved; the connecting outer frame is installed on the outer side of the urheen tube and the outer side of the urheen support, the sound amplifying device is installed on one side of the urheen window, the loudspeaker is arranged at the urheen window end of the urheen tube in a sleeving mode, the shape of the urheen tube is not changed, the sound quality of the urheen is not affected, and the inner side of the internal thread cap is in threaded connection with the external thread tube through the arrangement of the external thread tube and the internal thread cap. A pull block is tightly jacked through an internal thread cap, the positions of a pull rod, a sliding plate, a connecting plate and a bevel edge clamping block are limited by tightly jacking the pull block, and the stability of position limiting between the bevel edge clamping block and a limiting clamping groove is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sound amplification, in particular to a sound amplification device. Background Art

[0002] The erhu is a traditional Chinese stringed instrument with two strings. It originated in the Tang Dynasty and has a history of more than a thousand years. The erhu includes the instrument body (including the neck, sound box, support, membrane, sound window), the string system (including strings, pegs, bridge, bridge, sound pads) and the bow (including bow fish, bow rod, bow hair). For wandering singer teams with a large number of erhu performers, they usually bring their own large-scale sound amplification and power amplifier equipment. However, this auxiliary equipment is large in size, and the sound amplification device installs components in the sound box for amplification. Changing the shape of the sound box can easily affect the sound quality of the erhu itself. Utility Model Content

[0003] The purpose of the utility model is to provide a sound amplifying device to solve the problem that a wandering singer team with a large number of erhu performers mentioned in the above background technology usually has to prepare various relatively large sound amplifying audio and power amplifier equipment, but such auxiliary equipment is large in size, and the sound amplifying device installs components in the sound box for amplification, and changing the shape of the sound box is likely to affect the sound quality of the erhu itself.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sound amplifying device comprises a sound box, the bottom of the sound box is fixedly connected to a sound support, one side of the sound box and the sound support is installed with a connecting outer frame, the inner side of the connecting outer frame is fixedly connected to a sealing inner frame, the inner side of the sealing inner frame is provided with a sealing inner groove cooperating with the sound support, one side of the sound box is provided with a sound window, one side of the connecting outer frame is fixedly connected to a connecting tube, one side of the connecting tube is fixedly connected to a cover tube, one side of the cover tube is fixedly connected to a speaker tube, the top of the speaker tube is fixedly connected to a fixed top box, the interior of the fixed top box is symmetrically and slidingly connected with two connecting plates, the bottom of the connecting plate is fixedly connected to a beveled block, and the top of the connecting outer frame is symmetrically provided with two limiting grooves cooperating with the beveled block.

[0005] As a preferred solution of the utility model: a music rod is fixedly connected to the top of the music box.

[0006] As a preferred solution of the utility model: a sliding plate is slidably connected inside the fixed top box, and one side of the two connecting plates is fixedly connected to the sliding plate.

[0007] As a preferred solution of the utility model: two springs are symmetrically fixedly connected to the top of the sliding plate, and one end of the two springs is fixedly connected to the fixed top box.

[0008] As a preferred solution of the utility model: a pull rod is fixedly connected to the top of the sliding plate, and the pull rod is slidably connected to the fixed top box.

[0009] As a preferred solution of the utility model: a pull block is fixedly connected to the top end of the pull rod.

[0010] As a preferred solution of the utility model: the top of the fixed top box is fixedly connected with an external threaded barrel, the external threaded barrel is located outside the pull block, and an internal threaded cap matching with the pull block is installed above the external threaded barrel.

[0011] As a preferred solution of the utility model: a loudspeaker is installed inside the connecting tube.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model realizes the limiting fixation between the beveled block at the bottom of the connecting plate and the limiting slot by setting a beveled block and a limiting slot, installs the connecting outer frame on the outside of the sound box and the sound support, installs a sound amplification device on one side of the sound window, and puts the sound amplifier on the sound window end of the erhu sound box without changing the shape of the sound box and affecting the sound quality of the erhu, and realizes the threaded connection between the inner side of the internal threaded cap and the external threaded tube by setting an external threaded tube and an internal threaded cap, tightens the pull block by the internal threaded cap, and limits the position of the pull rod, sliding plate, connecting plate and beveled block by tightening the pull block, thereby ensuring the stability of the position restriction between the beveled block and the limiting slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the sealed inner frame structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the fixed top box of the utility model;

[0016] Figure 4 This is a schematic diagram of the internal structure of the connecting tube of the utility model;

[0017] Figure 5 It is a top view of the fixed top box of the utility model.

[0018] In the figure: 1. sound box; 2. sound bar; 3. connecting outer frame; 4. sealed inner frame; 5. sealed inner groove; 6. sound window; 7. fixed top box; 8. connecting plate; 9. beveled edge block; 10. limiting slot; 11. sliding plate; 12. pull rod; 13. pull block; 14. external threaded tube; 15. internal threaded cap; 16. spring; 17. connecting tube; 18. sound support; 19. cover tube; 20. speaker tube; 21. speaker tube; 22. loudspeaker. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 5 The utility model provides a technical solution: a sound amplification device, including a piano tube 1, the bottom of the piano tube 1 is fixedly connected to a piano support 18, a connecting outer frame 3 is installed on one side of the piano tube 1 and the piano support 18, a sealing inner frame 4 is fixedly connected to the inner side of the connecting outer frame 3, a sealing inner groove 5 matching with the piano support 18 is opened on the inner side of the sealing inner frame 4, a piano window 6 is provided on one side of the piano tube 1, a connecting tube 17 is fixedly connected to one side of the connecting outer frame 3, a cover tube 19 is fixedly connected to one side of the connecting tube 17, a speaker tube 20 is fixedly connected to one side of the cover tube 19, and the top of the speaker tube 20 is fixedly connected to the outer frame 3. A speaker 21 is connected, a fixed top box 7 is fixedly connected to the top of the sound box 1, two connecting plates 8 are symmetrically and slidingly connected inside the fixed top box 7, a beveled block 9 is fixedly connected to the bottom of the connecting plate 8, two limiting slots 10 that cooperate with the beveled block 9 are symmetrically provided on the top of the connecting outer frame 3, the beveled block 9 enters the limiting slot 10 to limit the installation position of the connecting outer frame 3 and the sealed inner frame 4, a sound amplifying device is installed on one side of the sound window 6, and the sound amplifying device is mounted on the sound window 6 end of the erhu sound box 1 without changing the shape of the sound box 1 and affecting the sound quality of the erhu.

[0021] The top of the sound box 1 is fixedly connected with a sound bar 2 .

[0022] The interior of the fixed top box 7 is slidably connected with a sliding plate 11 , and one side of the two connecting plates 8 is fixedly connected to the sliding plate 11 .

[0023] Among them, two springs 16 are symmetrically fixedly connected to the top of the sliding plate 11, and one end of the two springs 16 is fixedly connected to the fixed top box 7, and the position of the sliding plate 11 is reset by the springs 16.

[0024] The top of the sliding plate 11 is fixedly connected with a pull rod 12 , and the pull rod 12 is slidably connected to the fixed top box 7 .

[0025] Among them, a pull block 13 is fixedly connected to the top end of the pull rod 12, and the pull block 13 is used to facilitate pulling and adjusting the pull rod 12.

[0026] Among them, the top of the fixed top box 7 is fixedly connected with an external threaded barrel 14, and the external threaded barrel 14 is located on the outside of the pulling block 13. An internal threaded cap 15 that cooperates with the pulling block 13 is installed above the external threaded barrel 14. By rotating the internal threaded cap 15, the internal threaded cap 15 is connected to the outer side of the external threaded barrel 14, and the pulling block 13 is pushed up by the internal threaded cap 15 to maintain the fixed installation position.

[0027] A loudspeaker 22 is installed inside the connecting tube 17 to amplify the collected erhu performance sound.

[0028] Specifically, when in use, remove the internal threaded cap 15 on the outside of the external threaded tube 14, pull the pull block 13 upward, the pull block 13 drives the pull rod 12, the sliding plate 11, the connecting plate 8 and the bevel block 9 to move upward, connect the outer frame 3 and the inner sealed inner frame 4 to the outer side of the sound box 1, and connect the sealed inner groove 5 on the inner side of the sealed inner frame 4 to the sound box 18 to make a closed connection. After one side of the connected outer frame 3 is pushed to the fixed top box 7, release the pull block 13. At this time, the spring 16 compressed by the sliding plate 11 is reset, and the spring 16 is reset and drives The sliding plate 11, the connecting plate 8 and the bevel block 9 move downward to reset, and the bevel block 9 enters the limiting slot 10 to limit the installation position of the connecting outer frame 3 and the sealing inner frame 4. By rotating the internal threaded cap 15, the internal threaded cap 15 is connected to the outer thread of the external threaded tube 14, and the pull block 13 is pushed by the internal threaded cap 15 to maintain the installation fixed position, and sound is produced through the piano window 6 on one side of the sound box 1, and the sound is amplified by the loudspeaker 22 in the connecting tube 17, and the sound is amplified through the cover tube 19, the speaker tube 20 and the speaker tube 21.

[0029] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0031] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sound amplification device, comprising a sound box (1), characterized in that: The bottom of the instrument tube (1) is fixedly connected to a chord (18); a connecting outer frame (3) is installed on one side of the instrument tube (1) and the chord (18); a sealing inner frame (4) is fixedly connected to the inner side of the connecting outer frame (3); a sealing inner groove (5) matching the chord (18) is provided on the inner side of the sealing inner frame (4); a chord window (6) is provided on one side of the instrument tube (1); a connecting tube (17) is fixedly connected to one side of the connecting outer frame (3); and a cover is fixedly connected to one side of the connecting tube (17). The cover tube (19) is fixedly connected to a speaker tube (20) on one side, the top of the speaker tube (20) is fixedly connected to a speaker tube (21), the top of the piano tube (1) is fixedly connected to a fixed top box (7), the interior of the fixed top box (7) is symmetrically slidably connected to two connecting plates (8), the bottom of the connecting plate (8) is fixedly connected to a bevel block (9), and the top of the connecting outer frame (3) is symmetrically provided with two limiting slots (10) that cooperate with the bevel block (9).

2. A sound amplification device according to claim 1, characterized in that: The top of the sound box (1) is fixedly connected to a sound bar (2).

3. A sound amplification device according to claim 1, characterized in that: The interior of the fixed top box (7) is slidably connected to a sliding plate (11), and one side of the two connecting plates (8) is fixedly connected to the sliding plate (11).

4. A sound amplification device according to claim 3, characterized in that: Two springs (16) are symmetrically fixedly connected to the top of the sliding plate (11), and one end of the two springs (16) is fixedly connected to the fixed top box (7).

5. A sound amplification device according to claim 3, characterized in that: A pull rod (12) is fixedly connected to the top of the sliding plate (11), and the pull rod (12) is slidably connected to the fixed top box (7).

6. A sound amplification device according to claim 5, characterized in that: A pull block (13) is fixedly connected to the top end of the pull rod (12).

7. A sound amplification device according to claim 6, characterized in that: An external threaded barrel (14) is fixedly connected to the top of the fixed top box (7), the external threaded barrel (14) is located outside the pull block (13), and an internal threaded cap (15) matching the pull block (13) is installed above the external threaded barrel (14).

8. A sound amplification device according to claim 1, characterized in that: A loudspeaker (22) is installed inside the connecting tube (17).

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